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Diffstat (limited to 'libjava/javax/swing/plaf/basic/BasicComboPopup.java')
| -rw-r--r-- | libjava/javax/swing/plaf/basic/BasicComboPopup.java | 1055 |
1 files changed, 0 insertions, 1055 deletions
diff --git a/libjava/javax/swing/plaf/basic/BasicComboPopup.java b/libjava/javax/swing/plaf/basic/BasicComboPopup.java deleted file mode 100644 index 73aac8d4e65..00000000000 --- a/libjava/javax/swing/plaf/basic/BasicComboPopup.java +++ /dev/null @@ -1,1055 +0,0 @@ -/* BasicComboPopup.java -- - Copyright (C) 2004, 2005 Free Software Foundation, Inc. - -This file is part of GNU Classpath. - -GNU Classpath is free software; you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation; either version 2, or (at your option) -any later version. - -GNU Classpath is distributed in the hope that it will be useful, but -WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU -General Public License for more details. - -You should have received a copy of the GNU General Public License -along with GNU Classpath; see the file COPYING. If not, write to the -Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA -02110-1301 USA. - -Linking this library statically or dynamically with other modules is -making a combined work based on this library. Thus, the terms and -conditions of the GNU General Public License cover the whole -combination. - -As a special exception, the copyright holders of this library give you -permission to link this library with independent modules to produce an -executable, regardless of the license terms of these independent -modules, and to copy and distribute the resulting executable under -terms of your choice, provided that you also meet, for each linked -independent module, the terms and conditions of the license of that -module. An independent module is a module which is not derived from -or based on this library. If you modify this library, you may extend -this exception to your version of the library, but you are not -obligated to do so. If you do not wish to do so, delete this -exception statement from your version. */ - - -package javax.swing.plaf.basic; - -import java.awt.Component; -import java.awt.Dimension; -import java.awt.Point; -import java.awt.Rectangle; -import java.awt.event.ItemEvent; -import java.awt.event.ItemListener; -import java.awt.event.KeyAdapter; -import java.awt.event.KeyEvent; -import java.awt.event.KeyListener; -import java.awt.event.MouseAdapter; -import java.awt.event.MouseEvent; -import java.awt.event.MouseListener; -import java.awt.event.MouseMotionAdapter; -import java.awt.event.MouseMotionListener; -import java.beans.PropertyChangeEvent; -import java.beans.PropertyChangeListener; - -import javax.swing.ComboBoxModel; -import javax.swing.JComboBox; -import javax.swing.JLabel; -import javax.swing.JList; -import javax.swing.JPopupMenu; -import javax.swing.JScrollBar; -import javax.swing.JScrollPane; -import javax.swing.ListCellRenderer; -import javax.swing.ListSelectionModel; -import javax.swing.SwingConstants; -import javax.swing.SwingUtilities; -import javax.swing.Timer; -import javax.swing.event.ListDataEvent; -import javax.swing.event.ListDataListener; -import javax.swing.event.ListSelectionEvent; -import javax.swing.event.ListSelectionListener; -import javax.swing.event.PopupMenuEvent; -import javax.swing.event.PopupMenuListener; - -/** - * UI Delegate for ComboPopup - * - * @author Olga Rodimina - */ -public class BasicComboPopup extends JPopupMenu implements ComboPopup -{ - /* Timer for autoscrolling */ - protected Timer autoscrollTimer; - - /** ComboBox associated with this popup */ - protected JComboBox comboBox; - - /** FIXME: Need to document */ - protected boolean hasEntered; - - /** - * Indicates whether the scroll bar located in popup menu with comboBox's - * list of items is currently autoscrolling. This happens when mouse event - * originated in the combo box and is dragged outside of its bounds - */ - protected boolean isAutoScrolling; - - /** ItemListener listening to the selection changes in the combo box */ - protected ItemListener itemListener; - - /** This listener is not used */ - protected KeyListener keyListener; - - /** JList which is used to display item is the combo box */ - protected JList list; - - /** This listener is not used */ - protected ListDataListener listDataListener; - - /** - * MouseListener listening to mouse events occuring in the combo box's - * list. - */ - protected MouseListener listMouseListener; - - /** - * MouseMotionListener listening to mouse motion events occuring in the - * combo box's list - */ - protected MouseMotionListener listMouseMotionListener; - - /** This listener is not used */ - protected ListSelectionListener listSelectionListener; - - /** MouseListener listening to mouse events occuring in the combo box */ - protected MouseListener mouseListener; - - /** - * MouseMotionListener listening to mouse motion events occuring in the - * combo box - */ - protected MouseMotionListener mouseMotionListener; - - /** - * PropertyChangeListener listening to changes occuring in the bound - * properties of the combo box - */ - protected PropertyChangeListener propertyChangeListener; - - /** direction for scrolling down list of combo box's items */ - protected static final int SCROLL_DOWN = 1; - - /** direction for scrolling up list of combo box's items */ - protected static final int SCROLL_UP = 0; - - /** Indicates auto scrolling direction */ - protected int scrollDirection; - - /** JScrollPane that contains list portion of the combo box */ - protected JScrollPane scroller; - - /** This field is not used */ - protected boolean valueIsAdjusting; - - /** - * Creates a new BasicComboPopup object. - * - * @param comboBox the combo box with which this popup should be associated - */ - public BasicComboPopup(JComboBox comboBox) - { - this.comboBox = comboBox; - installComboBoxListeners(); - configurePopup(); - setLightWeightPopupEnabled(comboBox.isLightWeightPopupEnabled()); - } - - /** - * This method displays drow down list of combo box items on the screen. - */ - public void show() - { - Rectangle cbBounds = comboBox.getBounds(); - - // popup should have same width as the comboBox and should be hight anough - // to display number of rows equal to 'maximumRowCount' property - int popupHeight = getPopupHeightForRowCount(comboBox.getMaximumRowCount()); - - list.setPreferredSize(new Dimension(cbBounds.width, popupHeight)); - super.setPopupSize(cbBounds.width, popupHeight); - - // Highlight selected item in the combo box's drop down list - if (comboBox.getSelectedIndex() != -1) - list.setSelectedIndex(comboBox.getSelectedIndex()); - - //scroll scrollbar s.t. selected item is visible - JScrollBar scrollbar = scroller.getVerticalScrollBar(); - int selectedIndex = comboBox.getSelectedIndex(); - if (selectedIndex > comboBox.getMaximumRowCount()) - scrollbar.setValue(getPopupHeightForRowCount(selectedIndex)); - - // location specified is relative to comboBox - super.show(comboBox, 0, cbBounds.height); - } - - /** - * This method hides drop down list of items - */ - public void hide() - { - super.setVisible(false); - } - - /** - * Return list cointaining JComboBox's items - * - * @return list cointaining JComboBox's items - */ - public JList getList() - { - return list; - } - - /** - * Returns MouseListener that is listening to mouse events occuring in the - * combo box. - * - * @return MouseListener - */ - public MouseListener getMouseListener() - { - return mouseListener; - } - - /** - * Returns MouseMotionListener that is listening to mouse motion events - * occuring in the combo box. - * - * @return MouseMotionListener - */ - public MouseMotionListener getMouseMotionListener() - { - return mouseMotionListener; - } - - /** - * Returns KeyListener listening to key events occuring in the combo box. - * This method returns null because KeyHandler is not longer used. - * - * @return KeyListener - */ - public KeyListener getKeyListener() - { - return keyListener; - } - - /** - * This method uninstalls the UI for the given JComponent. - */ - public void uninstallingUI() - { - uninstallComboBoxModelListeners(comboBox.getModel()); - - uninstallListeners(); - uninstallKeyboardActions(); - } - - /** - * This method uninstalls listeners that were listening to changes occuring - * in the comb box's data model - * - * @param model data model for the combo box from which to uninstall - * listeners - */ - protected void uninstallComboBoxModelListeners(ComboBoxModel model) - { - model.removeListDataListener(listDataListener); - } - - /** - * This method uninstalls keyboard actions installed by the UI. - */ - protected void uninstallKeyboardActions() - { - // FIXME: Need to implement - } - - /** - * This method fires PopupMenuEvent indicating that combo box's popup list - * of items will become visible - */ - protected void firePopupMenuWillBecomeVisible() - { - PopupMenuListener[] ll = comboBox.getPopupMenuListeners(); - - for (int i = 0; i < ll.length; i++) - ll[i].popupMenuWillBecomeVisible(new PopupMenuEvent(comboBox)); - } - - /** - * This method fires PopupMenuEvent indicating that combo box's popup list - * of items will become invisible. - */ - protected void firePopupMenuWillBecomeInvisible() - { - PopupMenuListener[] ll = comboBox.getPopupMenuListeners(); - - for (int i = 0; i < ll.length; i++) - ll[i].popupMenuWillBecomeInvisible(new PopupMenuEvent(comboBox)); - } - - /** - * This method fires PopupMenuEvent indicating that combo box's popup list - * of items was closed without selection. - */ - protected void firePopupMenuCanceled() - { - PopupMenuListener[] ll = comboBox.getPopupMenuListeners(); - - for (int i = 0; i < ll.length; i++) - ll[i].popupMenuCanceled(new PopupMenuEvent(comboBox)); - } - - /** - * Creates MouseListener to listen to mouse events occuring in the combo - * box. Note that this listener doesn't listen to mouse events occuring in - * the popup portion of the combo box, it only listens to main combo box - * part. - * - * @return new MouseMotionListener that listens to mouse events occuring in - * the combo box - */ - protected MouseListener createMouseListener() - { - return new InvocationMouseHandler(); - } - - /** - * Create Mouse listener that listens to mouse dragging events occuring in - * the combo box. This listener is responsible for changing the selection - * in the combo box list to the component over which mouse is being - * currently dragged - * - * @return new MouseMotionListener that listens to mouse dragging events - * occuring in the combo box - */ - protected MouseMotionListener createMouseMotionListener() - { - return new InvocationMouseMotionHandler(); - } - - /** - * KeyListener created in this method is not used anymore. - * - * @return KeyListener that does nothing - */ - protected KeyListener createKeyListener() - { - return new InvocationKeyHandler(); - } - - /** - * ListSelectionListener created in this method is not used anymore - * - * @return ListSelectionListener that does nothing - */ - protected ListSelectionListener createListSelectionListener() - { - return new ListSelectionHandler(); - } - - /** - * Creates ListDataListener. This method returns null, because - * ListDataHandler class is obsolete and is no longer used. - * - * @return null - */ - protected ListDataListener createListDataListener() - { - return null; - } - - /** - * This method creates ListMouseListener to listen to mouse events occuring - * in the combo box's item list. - * - * @return MouseListener to listen to mouse events occuring in the combo - * box's items list. - */ - protected MouseListener createListMouseListener() - { - return new ListMouseHandler(); - } - - /** - * Creates ListMouseMotionlistener to listen to mouse motion events occuring - * in the combo box's list. This listener is responsible for highlighting - * items in the list when mouse is moved over them. - * - * @return MouseMotionListener that handles mouse motion events occuring in - * the list of the combo box. - */ - protected MouseMotionListener createListMouseMotionListener() - { - return new ListMouseMotionHandler(); - } - - /** - * Creates PropertyChangeListener to handle changes in the JComboBox's bound - * properties. - * - * @return PropertyChangeListener to handle changes in the JComboBox's bound - * properties. - */ - protected PropertyChangeListener createPropertyChangeListener() - { - return new PropertyChangeHandler(); - } - - /** - * Creates new ItemListener that will listen to ItemEvents occuring in the - * combo box. - * - * @return ItemListener to listen to ItemEvents occuring in the combo box. - */ - protected ItemListener createItemListener() - { - return new ItemHandler(); - } - - /** - * Creates JList that will be used to display items in the combo box. - * - * @return JList that will be used to display items in the combo box. - */ - protected JList createList() - { - JList l = new JList(comboBox.getModel()); - l.setSelectionMode(ListSelectionModel.SINGLE_INTERVAL_SELECTION); - return l; - } - - /** - * This method configures the list of comboBox's items by setting default - * properties and installing listeners. - */ - protected void configureList() - { - list.setModel(comboBox.getModel()); - list.setVisibleRowCount(comboBox.getMaximumRowCount()); - installListListeners(); - } - - /** - * This method installs list listeners. - */ - protected void installListListeners() - { - // mouse listener listening to mouse events occuring in the - // combo box's list of items. - listMouseListener = createListMouseListener(); - list.addMouseListener(listMouseListener); - - // mouse listener listening to mouse motion events occuring in the - // combo box's list of items - listMouseMotionListener = createListMouseMotionListener(); - list.addMouseMotionListener(listMouseMotionListener); - - listSelectionListener = createListSelectionListener(); - list.addListSelectionListener(listSelectionListener); - } - - /** - * This method creates scroll pane that will contain the list of comboBox's - * items inside of it. - * - * @return JScrollPane - */ - protected JScrollPane createScroller() - { - return new JScrollPane(); - } - - /** - * This method configures scroll pane to contain list of comboBox's items - */ - protected void configureScroller() - { - scroller.getViewport().setView(list); - scroller.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_NEVER); - } - - /** - * This method configures popup menu that will be used to display Scrollpane - * with list of items inside of it. - */ - protected void configurePopup() - { - // initialize list that will be used to display combo box's items - this.list = createList(); - ((JLabel) list.getCellRenderer()).setHorizontalAlignment(SwingConstants.LEFT); - configureList(); - - // initialize scroller. Add list to the scroller. - scroller = createScroller(); - configureScroller(); - - // add scroller with list inside of it to JPopupMenu - super.add(scroller); - } - - /* - * This method installs listeners that will listen to changes occuring - * in the combo box. - */ - protected void installComboBoxListeners() - { - // mouse listener that listens to mouse event in combo box - mouseListener = createMouseListener(); - comboBox.addMouseListener(mouseListener); - - // mouse listener that listens to mouse dragging events in the combo box - mouseMotionListener = createMouseMotionListener(); - comboBox.addMouseMotionListener(mouseMotionListener); - - // item listener listenening to selection events in the combo box - itemListener = createItemListener(); - comboBox.addItemListener(itemListener); - - propertyChangeListener = createPropertyChangeListener(); - comboBox.addPropertyChangeListener(propertyChangeListener); - } - - /** - * This method installs listeners that will listen to changes occuring in - * the comb box's data model - * - * @param model data model for the combo box for which to install listeners - */ - protected void installComboBoxModelListeners(ComboBoxModel model) - { - // list data listener to listen for ListDataEvents in combo box. - // This listener is now obsolete and nothing is done here - listDataListener = createListDataListener(); - comboBox.getModel().addListDataListener(listDataListener); - } - - /** - * DOCUMENT ME! - */ - protected void installKeyboardActions() - { - // FIXME: Need to implement - } - - /** - * This method always returns false to indicate that items in the combo box - * list are not focus traversable. - * - * @return false - */ - public boolean isFocusTraversable() - { - return false; - } - - /** - * This method start scrolling combo box's list of items either up or down - * depending on the specified 'direction' - * - * @param direction of the scrolling. - */ - protected void startAutoScrolling(int direction) - { - // FIXME: add timer - isAutoScrolling = true; - - if (direction == SCROLL_UP) - autoScrollUp(); - else - autoScrollDown(); - } - - /** - * This method stops scrolling the combo box's list of items - */ - protected void stopAutoScrolling() - { - // FIXME: add timer - isAutoScrolling = false; - } - - /** - * This method scrolls up list of combo box's items up and highlights that - * just became visible. - */ - protected void autoScrollUp() - { - // scroll up the scroll bar to make the item above visible - JScrollBar scrollbar = scroller.getVerticalScrollBar(); - int scrollToNext = list.getScrollableUnitIncrement(super.getBounds(), - SwingConstants.VERTICAL, - SCROLL_UP); - - scrollbar.setValue(scrollbar.getValue() - scrollToNext); - - // If we haven't reached the begging of the combo box's list of items, - // then highlight next element above currently highlighted element - if (list.getSelectedIndex() != 0) - list.setSelectedIndex(list.getSelectedIndex() - 1); - } - - /** - * This method scrolls down list of combo box's and highlights item in the - * list that just became visible. - */ - protected void autoScrollDown() - { - // scroll scrollbar down to make next item visible - JScrollBar scrollbar = scroller.getVerticalScrollBar(); - int scrollToNext = list.getScrollableUnitIncrement(super.getBounds(), - SwingConstants.VERTICAL, - SCROLL_DOWN); - scrollbar.setValue(scrollbar.getValue() + scrollToNext); - - // If we haven't reached the end of the combo box's list of items - // then highlight next element below currently highlighted element - if (list.getSelectedIndex() + 1 != comboBox.getItemCount()) - list.setSelectedIndex(list.getSelectedIndex() + 1); - } - - /** - * This method helps to delegate focus to the right component in the - * JComboBox. If the comboBox is editable then focus is sent to - * ComboBoxEditor, otherwise it is delegated to JComboBox. - * - * @param e MouseEvent - */ - protected void delegateFocus(MouseEvent e) - { - // FIXME: Need to implement - } - - /** - * This method displays combo box popup if the popup is not currently shown - * on the screen and hides it if it is currently visible - */ - protected void togglePopup() - { - if (BasicComboPopup.this.isVisible()) - hide(); - else - show(); - } - - /** - * DOCUMENT ME! - * - * @param e DOCUMENT ME! - * - * @return DOCUMENT ME! - */ - protected MouseEvent convertMouseEvent(MouseEvent e) - { - return null; - } - - /** - * Returns required height of the popup such that number of items visible in - * it are equal to the maximum row count. By default - * comboBox.maximumRowCount=8 - * - * @param maxRowCount number of maximum visible rows in the combo box's - * popup list of items - * - * @return height of the popup required to fit number of items equal to - * JComboBox.maximumRowCount. - */ - protected int getPopupHeightForRowCount(int maxRowCount) - { - int totalHeight = 0; - ListCellRenderer rend = list.getCellRenderer(); - - if (comboBox.getItemCount() < maxRowCount) - maxRowCount = comboBox.getItemCount(); - - for (int i = 0; i < maxRowCount; i++) - { - Component comp = rend.getListCellRendererComponent(list, - comboBox.getModel() - .getElementAt(i), - -1, false, false); - Dimension dim = comp.getPreferredSize(); - totalHeight += dim.height; - } - - return totalHeight; - } - - /** - * DOCUMENT ME! - * - * @param px DOCUMENT ME! - * @param py DOCUMENT ME! - * @param pw DOCUMENT ME! - * @param ph DOCUMENT ME! - * - * @return DOCUMENT ME! - */ - protected Rectangle computePopupBounds(int px, int py, int pw, int ph) - { - return new Rectangle(px, py, pw, ph); - } - - /** - * This method changes the selection in the list to the item over which the - * mouse is currently located. - * - * @param anEvent MouseEvent - * @param shouldScroll DOCUMENT ME! - */ - protected void updateListBoxSelectionForEvent(MouseEvent anEvent, - boolean shouldScroll) - { - // FIXME: Need to implement - } - - /** - * InvocationMouseHandler is a listener that listens to mouse events - * occuring in the combo box. Note that this listener doesn't listen to - * mouse events occuring in the popup portion of the combo box, it only - * listens to main combo box part(area that displays selected item). This - * listener is responsible for showing and hiding popup portion of the - * combo box. - */ - protected class InvocationMouseHandler extends MouseAdapter - { - /** - * Creates a new InvocationMouseHandler object. - */ - protected InvocationMouseHandler() - { - } - - /** - * This method is invoked whenever mouse is being pressed over the main - * part of the combo box. This method will show popup if the popup is - * not shown on the screen right now, and it will hide popup otherwise. - * - * @param e MouseEvent that should be handled - */ - public void mousePressed(MouseEvent e) - { - if (comboBox.isEnabled()) - togglePopup(); - } - - /** - * This method is invoked whenever mouse event was originated in the combo - * box and released either in the combBox list of items or in the combo - * box itself. - * - * @param e MouseEvent that should be handled - */ - public void mouseReleased(MouseEvent e) - { - // Get component over which mouse was released - Component src = (Component) e.getSource(); - int x = e.getX(); - int y = e.getY(); - Component releasedComponent = SwingUtilities.getDeepestComponentAt(src, - x, y); - - // if mouse was released inside the bounds of combo box then do nothing, - // Otherwise if mouse was released inside the list of combo box items - // then change selection and close popup - if (! (releasedComponent instanceof JComboBox)) - { - // List model contains the item over which mouse is released, - // since it is updated every time the mouse is moved over a different - // item in the list. Now that the mouse is released we need to - // update model of the combo box as well. - comboBox.setSelectedIndex(list.getSelectedIndex()); - - if (isAutoScrolling) - stopAutoScrolling(); - hide(); - } - } - } - - /** - * InvocationMouseMotionListener is a mouse listener that listens to mouse - * dragging events occuring in the combo box. - */ - protected class InvocationMouseMotionHandler extends MouseMotionAdapter - { - /** - * Creates a new InvocationMouseMotionHandler object. - */ - protected InvocationMouseMotionHandler() - { - } - - /** - * This method is responsible for highlighting item in the drop down list - * over which the mouse is currently being dragged. - */ - public void mouseDragged(MouseEvent e) - { - // convert point of the drag event relative to combo box list component - // figure out over which list cell the mouse is currently being dragged - // and highlight the cell. The list model is changed but the change has - // no effect on combo box's data model. The list model is changed so - // that the appropriate item would be highlighted in the combo box's - // list. - if (BasicComboPopup.this.isVisible()) - { - int cbHeight = (int) comboBox.getPreferredSize().getHeight(); - int popupHeight = BasicComboPopup.this.getSize().height; - - // if mouse is dragged inside the the combo box's items list. - if (e.getY() > cbHeight && ! (e.getY() - cbHeight >= popupHeight)) - { - int index = list.locationToIndex(new Point(e.getX(), - (int) (e.getY() - - cbHeight))); - - int firstVisibleIndex = list.getFirstVisibleIndex(); - - // list.locationToIndex returns item's index that would - // be located at the specified point if the first item that - // is visible is item 0. However in the JComboBox it is not - // necessarily the case since list is contained in the - // JScrollPane so we need to adjust the index returned. - if (firstVisibleIndex != 0) - // FIXME: adjusted index here is off by one. I am adding one - // here to compensate for that. This should be - // index += firstVisibleIndex. Remove +1 once the bug is fixed. - index += firstVisibleIndex + 1; - - list.setSelectedIndex(index); - } - else - { - // if mouse is being dragged at the bottom of combo box's list - // of items or at the very top then scroll the list in the - // desired direction. - boolean movingUP = e.getY() < cbHeight; - boolean movingDown = e.getY() > cbHeight; - - if (movingUP) - { - scrollDirection = SCROLL_UP; - startAutoScrolling(SCROLL_UP); - } - else if (movingDown) - { - scrollDirection = SCROLL_DOWN; - startAutoScrolling(SCROLL_DOWN); - } - } - } - } - } - - /** - * ItemHandler is an item listener that listens to selection events occuring - * in the combo box. FIXME: should specify here what it does when item is - * selected or deselected in the combo box list. - */ - protected class ItemHandler extends Object implements ItemListener - { - /** - * Creates a new ItemHandler object. - */ - protected ItemHandler() - { - } - - /** - * This method responds to the selection events occuring in the combo box. - * - * @param e ItemEvent specifying the combo box's selection - */ - public void itemStateChanged(ItemEvent e) - { - } - } - - /** - * ListMouseHandler is a listener that listens to mouse events occuring in - * the combo box's list of items. This class is responsible for hiding - * popup portion of the combo box if the mouse is released inside the combo - * box's list. - */ - protected class ListMouseHandler extends MouseAdapter - { - protected ListMouseHandler() - { - } - - public void mousePressed(MouseEvent e) - { - } - - public void mouseReleased(MouseEvent anEvent) - { - int index = list.locationToIndex(anEvent.getPoint()); - comboBox.setSelectedIndex(index); - hide(); - } - } - - /** - * ListMouseMotionHandler listens to mouse motion events occuring in the - * combo box's list. This class is responsible for highlighting items in - * the list when mouse is moved over them - */ - protected class ListMouseMotionHandler extends MouseMotionAdapter - { - protected ListMouseMotionHandler() - { - } - - public void mouseMoved(MouseEvent anEvent) - { - // Highlight list cells over which the mouse is located. - // This changes list model, but has no effect on combo box's data model - int index = list.locationToIndex(anEvent.getPoint()); - list.setSelectedIndex(index); - list.repaint(); - } - } - - /** - * This class listens to changes occuring in the bound properties of the - * combo box - */ - protected class PropertyChangeHandler extends Object - implements PropertyChangeListener - { - protected PropertyChangeHandler() - { - } - - public void propertyChange(PropertyChangeEvent e) - { - if (e.getPropertyName().equals("renderer")) - { - list.setCellRenderer((ListCellRenderer) e.getNewValue()); - revalidate(); - repaint(); - } - if (e.getPropertyName().equals("dataModel")) - { - list.setModel((ComboBoxModel) e.getNewValue()); - revalidate(); - repaint(); - } - } - } - - // ------ private helper methods -------------------- - - /** - * This method uninstalls listeners installed by the UI - */ - private void uninstallListeners() - { - uninstallListListeners(); - uninstallComboBoxListeners(); - uninstallComboBoxModelListeners(comboBox.getModel()); - } - - /** - * This method uninstalls Listeners registered with combo boxes list of - * items - */ - private void uninstallListListeners() - { - list.removeMouseListener(listMouseListener); - listMouseListener = null; - - list.removeMouseMotionListener(listMouseMotionListener); - listMouseMotionListener = null; - } - - /** - * This method uninstalls listeners listening to combo box associated with - * this popup menu - */ - private void uninstallComboBoxListeners() - { - comboBox.removeMouseListener(mouseListener); - mouseListener = null; - - comboBox.removeMouseMotionListener(mouseMotionListener); - mouseMotionListener = null; - - comboBox.removeItemListener(itemListener); - itemListener = null; - - comboBox.removePropertyChangeListener(propertyChangeListener); - propertyChangeListener = null; - } - - // -------------------------------------------------------------------- - // The following classes are here only for backwards API compatibility - // They aren't used. - // -------------------------------------------------------------------- - - /** - * This class is not used any more. - */ - public class ListDataHandler extends Object implements ListDataListener - { - public ListDataHandler() - { - } - - public void contentsChanged(ListDataEvent e) - { - } - - public void intervalAdded(ListDataEvent e) - { - } - - public void intervalRemoved(ListDataEvent e) - { - } - } - - /** - * This class is not used anymore - */ - protected class ListSelectionHandler extends Object - implements ListSelectionListener - { - protected ListSelectionHandler() - { - } - - public void valueChanged(ListSelectionEvent e) - { - } - } - - /** - * This class is not used anymore - */ - public class InvocationKeyHandler extends KeyAdapter - { - public InvocationKeyHandler() - { - } - - public void keyReleased(KeyEvent e) - { - } - } -} |
